Sewell Mining Town is particularly notable for its contribution to the global spread of large-scale mining technology.
Soon, more than a hundred multi-coloured buildings arose that housed the miners.
At its peak, Swell had 15,000 inhabitants.
By the end of the 1960s, the copper industry was nationalized and became the property of the State.
In 2006, it became a UNESCO World Heritage Site.
The mine however still functions and El Teniente now produces 3% of the worlds' copper.
